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The Membrane Society of Korea (한국막학회)
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A Study on the Validity of the Metal Filter Application in MBR Process

MBR 시스템에서의 금속필터 적용타당성 연구

  • Lee, Min Soo (Department of Environmental Energy Engineering, Seoul National University of Science & Technology) ;
  • Lee, Kang Hoon (Department of Environmental Engineering, Catholic University, Songsim Global Campus) ;
  • Lee, Yong Soo (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Chung, Kun Yong (Department of Environmental Energy Engineering, Seoul National University of Science & Technology)
  • 이민수 (서울과학기술대학교 에너지환경공학과) ;
  • 이강훈 (가톨릭대학교 에너지환경공학과) ;
  • 이용수 (한양대학교 건설환경공학과) ;
  • 정건용 (서울과학기술대학교 에너지환경공학과)
  • Received : 2022.01.27
  • Accepted : 2022.02.22
  • Published : 2022.02.28
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Abstract

In this study, a method for stabilizing treated water was conducted while maintaining high flux using a metal flat membrane module made of stainless steel. This module had a pore size of 13 ㎛, so it was possible to operate at a high flux from 60 LMH to 100 LMH. However, although SS leaked about 30~50 ppm during initial operation, aggregation was possible because SS acted as aggregation nucleus. While polymer membrane permeate does not have aggregation nucleus, so coagulation is possible but not flocculation. Typically clay or bentonite, which is used as aggregation nucleus, is additionally administered. In this study, the total phosphorus treatment and the quality of the treated water were to promote stability because flocculation was achieved only with SS leakage without the need for such a aggregation nucleus. Finally, the feasibility of operating a metal membrane filter capable of high flux in stable treated water to be applied to the MBR system.

본 연구에서는 stainless steel로 재질로 된 금속평막모듈을 이용하여 고플럭스가 유지되면서 처리수의 안정화 방안을 모색하였다. 이 모듈은 기공사이즈가 13 ㎛ 단위여서 플럭스가 60 LMH에서 100 LMH까지 고플럭스로 운전이 가능하다 그러나 SS가 초기 운전 시 30~50 ppm 정도 유출되지만 SS가 응집핵으로 작용하므로 응집이 가능하게 된다. 기존 고분자막 여과수는 응집핵이 없어서 coagulation은 되지만 floculation이 안되므로 추가적으로 응집보조제인 clay나 벤토나이트를 투여하게 되는데 본 연구에서는 이런 응집보조제 필요 없이 SS 누출만으로 floculation이 되므로 총인처리와 처리수질이 안정성을 도모하고자 하였다. 최종적으로 안정적인 처리수에 고플럭스가 가능한 Metal필터 운전이 MBR 시스템에서 적용가능한지 타당성을 연구하고자 하였다.

Keywords

Acknowledgement

본 결과물은 환경부의 재원으로 한국환경산업기술원의 글로벌탑환경기술개발사업의 지원을 받아 연구되었습니다.(2016002100001)

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